package com.google.gwt.sample.contacts.client.view;

import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.HasClickHandlers;
import com.google.gwt.sample.contacts.client.presenter.ContactsPresenter;
import com.google.gwt.user.client.ui.*;

import java.util.ArrayList;
import java.util.List;

public class ContactsView extends Composite implements ContactsPresenter.Display
{
   private final Button addButton;
   private final Button deleteButton;
   private FlexTable contactsTable;
   private final FlexTable contentTable;

   public ContactsView()
   {
      DecoratorPanel contentTableDecorator = new DecoratorPanel();
      initWidget(contentTableDecorator);
      contentTableDecorator.setWidth("100%");
      contentTableDecorator.setWidth("18em");

      contentTable = new FlexTable();
      contentTable.setWidth("100%");
      contentTable.getCellFormatter().addStyleName(0, 0, "contacts-ListContainer");
      contentTable.getCellFormatter().setWidth(0, 0, "100%");
      contentTable.getFlexCellFormatter().setVerticalAlignment(0, 0, DockPanel.ALIGN_TOP);

      // Create the menu
      //
      HorizontalPanel hPanel = new HorizontalPanel();
      hPanel.setBorderWidth(0);
      hPanel.setSpacing(0);
      hPanel.setHorizontalAlignment(HorizontalPanel.ALIGN_LEFT);
      addButton = new Button("Add");
      hPanel.add(addButton);
      deleteButton = new Button("Delete");
      hPanel.add(deleteButton);
      contentTable.getCellFormatter().addStyleName(0, 0, "contacts-ListMenu");
      contentTable.setWidget(0, 0, hPanel);

      // Create the contacts list
      //
      contactsTable = new FlexTable();
      contactsTable.setCellSpacing(0);
      contactsTable.setCellPadding(0);
      contactsTable.setWidth("100%");
      contactsTable.addStyleName("contacts-ListContents");
      contactsTable.getColumnFormatter().setWidth(0, "15px");
      contentTable.setWidget(1, 0, contactsTable);

      contentTableDecorator.add(contentTable);
   }

   public HasClickHandlers getAddButton()
   {
      return addButton;
   }

   public HasClickHandlers getDeleteButton()
   {
      return deleteButton;
   }

   public HasClickHandlers getList()
   {
      return contactsTable;
   }

   public void setData(List<String> data)
   {
      contactsTable.removeAllRows();

      for (int i = 0; i < data.size(); ++i)
      {
         contactsTable.setWidget(i, 0, new CheckBox());
         contactsTable.setText(i, 1, data.get(i));
      }
   }

   public int getClickedRow(ClickEvent event)
   {
      int selectedRow = -1;
      HTMLTable.Cell cell = contactsTable.getCellForEvent(event);

      if (cell != null)
      {
         // Suppress clicks if the user is actually selecting the
         //  check box
         //
         if (cell.getCellIndex() > 0)
         {
            selectedRow = cell.getRowIndex();
         }
      }

      return selectedRow;
   }

   public List<Integer> getSelectedRows()
   {
      List<Integer> selectedRows = new ArrayList<Integer>();

      for (int i = 0; i < contactsTable.getRowCount(); ++i)
      {
         CheckBox checkBox = (CheckBox) contactsTable.getWidget(i, 0);
         if (checkBox.getValue())
         {
            selectedRows.add(i);
         }
      }

      return selectedRows;
   }

   public Widget asWidget()
   {
      return this;
   }
}
